At a local university, a random variable X is defined to be the number of 3 hour credit courses a student takes in a given semester. The discrete probability distribution of taking college courses is as follows: X: 3 4 5 6 7 P(X=x): 1 .2 4. 2 1 What is the probability of a student taking exactly 15 hours of courses? 0.30 040 0.00 0.50 At a local university, a random variable X is defined to be the number of 3 hour credit courses a student takes in a given semester. The discrete probability distribution of taking college courses is as follows: X: 3 4 5 6 7 P(Xx): .1 2. 4 2 .1 What is the probability of a student taking no more than 4 courses per semester? 0.50 0.30 040 O .00 At a local university, a random variable X is defined to be the number of 3 hour credit courses a student takes in a given semester. The discrete probability distribution of taking college courses is as follows: X: 3 4 5 6 7 P(X-x): .1 2 4. .2 1 What is the probability of a student taking less than 3 courses per semester? 0.50 O .00 O .30 0.40 At a local university, a random variable X is defined to be the number of 3 hour credit courses a student takes in a given semester. The discrete probability distribution of taking college courses is as follows: X: 3 4. 5 6 7 PIX-x): .1 .2 4 2 .1 What is the expected number of courses a student will take per semester? O 5.5 04 O 3 05